On Sunday night’s episode, Khloé grappled with extreme pain during her first trimester, side effects of her progesterone pills.

“I just feel sick every night,” she said. “I feel gross. I physically can barely walk.”

It’s been a baby boom for the family: Kim, 37, welcomed her third child, daughter Chicago, via a surrogate in January, and sister Kylie Jenner, 20, welcomed her first child, daughter Stormi, in February.